| 塔城地区干旱时空分布及变化特征 |
| |
| 引用本文： | 井立红,高婧,李新东,井立军,张静,谢秀琴.塔城地区干旱时空分布及变化特征[J].干旱区资源与环境,2009(7). |
| |
| 作者姓名： | 井立红 高婧 李新东 井立军 张静 谢秀琴 |
| |
| 作者单位： | 新疆塔城地区气象局;乌苏市气象局;兰州大学大气科学学院;新疆气象信息中心;阿勒泰地区气象局; |
| |
| 摘 要： | 利用干旱Z指数对塔城地区1961~2005年旱涝等级进行划分,分析了塔城地区干旱时空分布及变化特征,得出以下结论:1)EOF第1、2特征向量分别反映了塔城地区干旱的一致变化及南北两气候区干旱气候的不同特点;2)20世纪60年代干旱指数围绕平均值小幅振荡,70年代为旱期,80年代前半期偏旱,后半期偏涝,振幅增大,90年代以后干旱有所缓解,但极端旱涝事件发生频率和强度增大;3)近45 a气象干旱的影响范围呈不显著减少的趋势;4)干旱Z指数序列存在着18 a、7~8 a、6 a、4 a、2-3 a的振荡周期;5)ENSO事件与塔城地区次年夏季降水存在着遥相关关系。
|
| 关 键 词： | 塔城 干旱 时空分布 变化特征 |
Temporal-spatial distribution and change feature of droughts in Tacheng area |
| |
| JING Lihong,GAO Jing,LI Xindong,JING Lijun,ZHANG Jing,XIE Xiuqin.Temporal-spatial distribution and change feature of droughts in Tacheng area[J].Journal of Arid Land Resources and Environment,2009(7). |
| |
| Authors: | JING Lihong GAO Jing LI Xindong JING Lijun ZHANG Jing XIE Xiuqin |
| |
| Institution: | 1.Tacheng Meteorological Bureau;Tacheng 834700;P.R.China;2.Wusu Meteorological Bureau;Wusu 833000;3.College of Atmospheric Sciences;Lanzhou University;Lanzhou 730000;4.Xingjiang Meteorological Information Center;Urumqi 830002;5.Aletai Meteorological Bureau;Aletai 836500;P.R.China |
| |
| Abstract: | The gradation of drought/flood from 1961 to 2005 in Tacheng area was divided using Z-index,the spatial and temporal distribution and variation of drought were analyzed.Results indicated that the variation of drought was consistent according to the first charater vector with EOF method,but the drought feature was different between in the south /north Tacheng;In 1960s drought index occurred slight change near averages;The avriation amplitude became lager during 1970-1980,the dry period happened in 1970s,the s... |
| |
| Keywords: | Tacheng drought temporal-spatial distribution change feature |
| 本文献已被 CNKI 等数据库收录！ |
|
